Factor completely. If the polynomial cannot be factored, say it is prime.4x2 - 20x - 8x + 40

A. 4(x + 5)(x + 2)
B. (x - 5)(4x - 8)
C. (x - 5)(x - 2)
D. 4(x - 5)(x - 2)


Answer: D

Mathematics

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Solve the problem.The rate of growth of a microbe population is given by  where x is time in days. What is the net growth between day 3 and day 7?

A. 117,238,789 B. 222,613,544 C. 222,613,533 D. 111,306,789

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Write interval notation for the following. Then graph the interval on a number line.{x? x > 2.5}

A. [2.5, ?)

B. (2.5, ?)

C. (-?, 2.5)

D. (-?, 2.5]

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Decide whether the relation is a function. 

A. Function B. Not a function

Mathematics

Evaluate the sum. 

A. -42 B. 34 C. 42 D. 2

Mathematics